userconfig: Add some minor comments

Author: ccordoba12

spyderlib/userconfig.py

@@ -13,19 +13,22 @@
 
 from __future__ import print_function
 
+# Std imports
 import os
 import re
 import os.path as osp
 import shutil
 import time
 
+# Local imports
 from spyderlib import __version__
 from spyderlib.baseconfig import (DEV, TEST, get_module_source_path,
                                   get_home_dir)
 from spyderlib.utils.programs import check_version
 from spyderlib.py3compat import configparser as cp
 from spyderlib.py3compat import PY2, is_text_string, to_text_string
 
+# Std imports for Python 2
 if PY2:
     import codecs